var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
// restful
var bannerApiRouter = require('./api/banner');
var newsApiRouter = require('./api/news')

// admin
var bannerAdminRouter = require('./admin/banner')
var adminAdminRouter = require('./admin/admin')
var newsAdminRouter = require('./admin/news')

var app = express();

app.all("*",function(req,res,next){
  //设置允许跨域的域名，*代表允许任意域名跨域
//  // res.header("Access-Control-Allow-Origin","http://localhost:8081"); // 白名单
  res.header("Access-Control-Allow-Origin","*");
  //允许的header类型， content-type
  res.header("Access-Control-Allow-Headers","*");
  //跨域允许的请求方式
  res.header("Access-Control-Allow-Methods","DELETE,PUT,POST,GET,OPTIONS");
  next();
});

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));


app.all('/admin/*', (req, res, next) => {
   const token = req.headers.token || req.query.token || req.body.token
   if (req.url == '/admin/admin/login') {
     next()
   } else {
     if (token) {
       jwt.verify(token, '嗨购-admin', (err, decoded) => {
         if (err) {
           res.send({
             code: '10119',
             message: 'token无效'
           })
         } else {
           req.decoded = decoded
           next() // 中间件
         }
       })
     } else {
       res.send({
         code: '10119',
         message: 'token无效'
       })
     }
   } 
 })
// api

app.use('/api/banner', bannerApiRouter)
app.use('/api/news', newsApiRouter)



// admin
app.use('/admin/banner', bannerAdminRouter)
app.use('/admin/admin', adminAdminRouter)
app.use('/admin/news', newsAdminRouter)

app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
